DE2715222A1 - MIXTURE PREPARATION FOR COMBUSTION MACHINE - Google Patents

Description

PATENT ADVOCATES A. GRÜNECKER

I> * V -INO

% H. KINKiILDEY

2715222 W. STOCKMAlR

K. SCHUMANN

CH REH ISiAT OPU-PMYS

P. H. JAKOB

DtPl .. ING

G. BEZOLD

CR RtR MAT DiHL

8 MUNICH

MAXIMILIAN3TR & SSE

April 5th 1977

Nissan Motor Company, Limited

No. 2, Takara-machi, Kanagavia-ku, Yokohama City, Japan

Food preparation for internal combustion engine

The invention relates to an arrangement for the Mixture preparation in an internal combustion engine and in particular provides such an arrangement for controlling the air-fuel ratio by electrostatic means Forces,

709843/0740

TlUtFON (099) 9Q9Sea TELEX 0B-20 38O TEt-EQRAUME MONAPAT TELEKOPIERSS

There have been various arrangements and methods for reducing the pollutant content of the exhaust gases from Internal combustion engines proposed. However, such methods and arrangements require significant changes on the carburetor and / or on the combustion chambers, so that they are very complex and expensive.

An important object of the invention is to provide an improved arrangement for the efficient control of the Air-fuel ratio in an internal combustion engine by means of electrostatic forces.

A further aim of the invention is to provide an arrangement of the type mentioned which enables a fat To concentrate air-fuel mixture by electrostatic forces in the area of the electrodes of a spark plug.

Another object of the invention is to provide an arrangement of the type mentioned which enables the Air-fuel ratio of a mixture supplied to the individual combustion chambers of an internal combustion engine by means of to control electrostatic forces.

In an arrangement according to the invention, an electrostatically charged liquid fuel is fed into a Venturi nozzle atomized and fed to the combustion chambers of an internal combustion engine under the action of electrostatic forces, so that the air-fuel mixture flowing into this always has the most favorable air-fuel ratio possible.

In the following, exemplary embodiments of the invention are explained with reference to the drawing, in which mutually corresponding Parts are designated throughout with the same reference numerals and in the

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1 shows a schematic representation of a preferred first embodiment of the invention,

Fig. 2a is a longitudinal sectional view of one in the execution part used according to Fig. 1,

Fig. 2b is an end view of the part shown in Fig. 2a,

Fig. 3 shows the installation of the part shown in Fig. 2a in a Cylinder,

FIG. 4 shows a modification of the first preferred shown in FIG Embodiment,

5 shows a schematic representation of a second preferred one Embodiment of the invention,

FIGS. 6a and 6b each show a longitudinal sectional view of parts used in the embodiment according to FIG. 5,

FIG. 7 shows a modification of the second shown in FIG preferred embodiment,

Fig. 8 is a longitudinal sectional view of a part used in the embodiment of Fig. 5;

9a is a cross-sectional view of one in a suction line seated part used in the arrangement according to FIGS. 5 »6b and 7,

Fig. 9b is a longitudinal sectional view of that shown in Fig. 9a Part,

Fig. 10a is a cross-sectional view of a suction, line seated part, preferably used in the arrangement according to Fig. 5 »6b and 7,

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4 *

Fig. 10b is a longitudinal sectional view of the part shown in Fig. 10a,

Fig. 11a shows a modification of one of the first and second Embodiment used,

11b and 11c are sectional views along the line C-C and D-D, respectively, in FIG. 11a,

Figures 12a and 12b correspond to those shown in Figures 11b and 11c Sectional views of a modification of the part in question,

13a is a longitudinal sectional view of another modification of one used in the first and second embodiments Part,

13b is a view in section along the line E-E in Fig. 13a and

14 shows a schematic representation of a further embodiment show the invention.

In a first embodiment of the invention shown in FIG. 1, a direct current high voltage source 2 is connected at its negative terminal 4 to a needle electrode 8 which protrudes into a float housing 10 in order to electrostatically charge a liquid fuel contained therein. The output voltage of the voltage source 2 is preferably a few thousand to a few tens of thousands of volts. The charged fuel passes through a main nozzle 14 into a Venturi passage 12 and is known to be more effectively atomized in this than a non-charged fuel. A further electrode 16 connected to the positive pole 6 of the voltage source 2 is preferably provided near the outlet of the main nozzle

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serves to increase the charged Brennstofftropfch.eE accelerate. In Fig. 1, the electrode 16 is a part of the rest of an electrically insulating material Shaped Venturi nozzle 12 is, but it can also be carried out separately from this. The atomized fuel mixes with air sucked in via an air filter (not shown), and the resulting mixture passes over an intake pipe 20 and an inlet 22 into a cylinder 18. The center electrode 24 of a spark plug 26 is with connected to the positive terminal 6 of the voltage source 2, so that it electrostatically attracts the negatively charged fuel droplets to enter the area of the spark plug richer, more easily ignitable air-fuel mixture focus. The arrangement according to the invention thereby enables reliable ignition of a relatively lean mixture and is therefore suitable for a combustion system with exhaust gas recirculation or a two-stage combustion system which some cylinders are fed a rich air-fuel mixture and the remaining cylinders a lean air-fuel mixture to reduce the content of nitrogen oxides in the exhaust gases.

The intake line 20 and the cylinder wall 19 are preferred connected to the negative terminal 4 of the voltage source 2 to prevent the adherence of the fuel droplets to avoid on their inner walls. The negative charge the cylinder wall 19 also helps keep the fuel droplets in the region of the positively charged electrode 24 focus.

The voltage applied to the electrode 24 by the voltage source 2 The voltage is to be limited to a certain value so that it is between it and the other electrode 24 'of the spark plug or the cylinder wall 19 no flashover takes place through which the mixture would ignite. Instead of described arrangement in which the center electrode of the spark plug is connected to the voltage source 2,

709843/07 * 0

a further electrode 28 can be arranged in the cylinder head near the spark plug 26, which has a dashed line Line 27 shown with the positive terminal 6 of the Voltage source 2 is connected. In this case, a higher voltage can be applied to the additional electrode 28 without premature ignition of the air-fuel mixture comes.

In any case, the one placed on the electrode 24 or 28 must However, the voltage lies below a limit value at which premature ignition occurs. To this end a (not shown) voltage divider or the like. Be provided via which the electrode 24 or 28 with a appropriate voltage is supplied.

If the spark plug 26 is electrically opposite the cylinder wall 19 is insulated, its outer electrode 24- 'can also be used for electrostatic charging.

The electrode 28 shown in the arrangement according to FIG. 1 is shown in detail in FIGS. 2a and 2b. She shows you in a socket seated insulating body 30 »34- on, in which a connector 32 is embedded. Several electrode needles 36 protrude from one end face, A strong electrostatic field can build up in the tip areas. Fig. 3 shows the installation of the electrode 28 in a cylinder 19

The second embodiment shown in FIG. 4 differs from that shown in FIG. 1 by one additional control device 38. This is fed with a control signal V1, which is from at least one Operating parameters of the engine is dependent, for example the speed, the amount of air drawn in, the negative pressure in the intake pipe or the temperature of the engine. The controls as a function of the control signal V1

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Control device 38 connected to electrode 24 or 23 laid tension. As a result, the following advantages can be achieved: The voltage at which a flashover causes a Premature ignition is lower at idle speed than at higher speeds. On the other hand nuts the negatively charged fuel droplets at higher Speeds in a much shorter period of time around the Electrode 24 or 28 can be concentrated around. So will at low speeds a lower and at high speeds a higher voltage to the electrode 24 resp. 28 placed, a sufficient concentration of the fuel droplets in the Area of the electrode achievable. The acceleration electrode 16 is preferably also on the control device connected so that the voltage applied to them also depends on at least one operating parameter the machine is controlled.

According to the above, the fuel is charged negatively, but it can also be charged positively will. In this case, a negative voltage is then applied to the electrodes 16, 24 and 28. The voltage source 2 does not have to be a direct voltage source, but can also be a low-frequency one AC voltage source can be used. Furthermore, there is no need for a dedicated one to charge the fuel Electrode 8 to be used, but the float housing 10 and / or the main nozzle 14 can be electrical be conductive and connected to the voltage source 2.

The embodiment described enables a safe Ignition of a lean air-fuel mixture and is therefore particularly suitable for a combustion system with exhaust gas recirculation for reducing the content of nitrogen oxides in exhaust gases. The by charging the fuel improved atomization of the same in the venturi passage

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guarantees an extremely evenly prepared air-fuel mixture.

The second embodiment of the invention shown in FIGS. 5 to 10 is in particular for one explained above two-stage combustion system determined. Such a two-stage combustion system is extensive known, but it suffers from certain deficiencies. It requires two carburettors, which is a more complicated one Structure results. This can be avoided by using a fuel injection system, however, such a system is expensive and also quite complicated. In this regard, the second allows Execution form a significant simplification.

In Fig. 5 you can see four suction lines 52, 5 ^, 56, 58, in each of which an electrode 60, 62, 64 or 66 connected to a control device 68 is arranged. The control device 68 in turn is connected to a direct current high voltage source 2 connected. Depending on the control signals V3 and V4 supplied to it, it connects the control device 68 connects the individual electrodes 60 to 66 with the voltage source 2. The nozzle 14 is here connected to the positive terminal 6 of the voltage source 2, so that the flowing from the float housing 10 ago Fuel positively charged as it emerges from nozzle 14 will. The air-fuel mixture formed in the venturi passage 12 first reaches the common Inlet 20 of suction lines 52 to 58. Should now be the one connected to suction line 52, for example Cylinders suck in a richer mixture, the associated electrode 60 is activated via the control device 68 fed with negative voltage. If the other way around, another cylinder, for example the one on the intake line connected cylinders suck in a lean mixture, the associated electrode 62, as shown in FIG.

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tr

represents, via the control device 68 with the positive Connection of the voltage source connected. The same also applies to the other two suction lines 56 or 58 to.

The one of the control device 68 supplied signal V3 is generated, for example, by the interrupter of the ignition distributor (not shown) and thus gives the ignition point at. The other signal V4-v / is, for example, from a in operative relation to a coil arranged from the distributor to a spark plug guides secondary line generated. The control device fed with signals V3 and V4- 68 determined; based on the signals which Cylinder is sucking in and provides the corresponding connection between the associated electrode 60, 62, or 66 and the voltage source 2.

In the following tables 1 to 3 the cylinders 1, 2, 3 »4 are in this order on the intake lines 52, 54 »56, 58 connected.

In Pig. 1 shows how the control device 68 determines the polarity of the electrodes 60 to 66 supplied Voltage controls.

Table Λ

Number of pulses d. Signals V3 60 1 2 3 4th 5 6th 7th 8th ... Number of pulses d. Signals V4 62 1 2 ... Ignition cylinder 54 · 1 3 4th 2 1 3 2 ... Suction cylinder 66 4th 2 1 3 4th 2 Λ 3 ... Mixture rich or lean f m f m f m f m Polarity of
Electrodes + + • · · + + + _ + + + _ • · · + + + + + + • · · - + - - - + - • · ·

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4?

Show the signals fed to the control device 68 V3 and V4, for example, indicate that cylinder no. 1 is firing, this means that cylinder no. 4 is currently firing sucks. If the control device 68 then applies a negative voltage to the electrode 66 and a positive voltage to the other electrodes 60, 62 and 64, the cylinders connected to the intake line 58 produce a richer mixture. Since the ignition and thus also the suction sequence for the cylinder, you can use the table to determine whether the individual cylinders are richer or lean mixture are fed.

Since there are usually an even number of cylinders, they are in the arrangement shown by Table 1 two cylinders each with a lean mixture and the other two cylinders with the richer mixture fed. In contrast, in the arrangement shown in Table 2 below, the four cylinders are alternating fed with a leaner and richer mixture.

Table 2

Number of pulses d. Signals V3 60 1 2 3 4th 5 6th 7th 8th 9 10 - 3 · 11 12th 13th 14th 15th 16 Number of pulses d. Signals V4 62 1 2 3 2 4th Ignition cylinder 64 1 3 4th 2 1 3 4th 2 1 4th 2 1 3 4th 2 Suction "cylinder 66 4th 2 1 3 4th 2 Λ 3 4th + 1 3 4th 2 1 3 Mixture rich or lean m f f ra f ra ra f m - f m f m m t Polarity of
Electrodes - + - - + - + + - + - - + - + + - - + - + + - + - • + + - + + - + - + + + + - - - - + + + - - - + + + - - - - + + + - - - - +

709843 / 074Q

As can be seen in Table 2, each individual cylinder is Alternately fed with lean and fatter genes.

In the following Table 3 is one of those in Table 1 shown corresponding arrangement of the control device 68 is shown, in which, however, only the two electrodes and 66 are present.

Table 3

Pulse number of the signal V3 60 1 2 3 2 5 6th 7th 8th ... Pulse number of the signal V4 66 1 3 2 Ignition cylinder no. 1 3 4- m 1 3 2 • · · Suction cylinder no. 4- P. 1 - 2 1 3 • · · Mixture rich or lean f m f - f m f ra • · · Polarity of
Electrodes + - - + - - - • · · - - - - + - • · ·

As can be seen in Table 3, the electrode 66 is negatively charged when the No. 4 cylinder is sucking, so that this is fed with a rich mixture. Then when cylinder No. 2 is sucking in, both electrodes 60 and 60 are negatively charged and therefore attract the positively charged fuel droplets, so that the No. 2 cylinder moves in gets a lean mixture. Then cylinder no. 1 sucks in, with electrodes 60 and 66 negative or negative. are positively charged, so that the No. 1 cylinder is fed with a rich mixture. Then finally it sucks Cylinder no. 3, both electrodes 60 and 66 are again negatively charged and draw the positively charged Fuel droplets at, making the # 3 cylinder a gets a lean mixture.

709843/074

J «

6a and 6b are two modifications of the second embodiment shown. In these the four suction lines are each in two groups 72, 74 and 70, 76 broken down. In the arrangement of Fig. 6a there are two plate-shaped electrodes 78, 80 arranged on the inflow side of the suction lines, while in the execution 6b, two ring-shaped electrodes 82, 84 instead of the plate-shaped electrodes 78, 80 are present.

The following table 4 shows the control processes for the embodiments according to FIGS. 6a and 6b, with the cylinders 1, 2, 3, 4 in this order to the Suction lines 70, 72, 74, 76 are connected.

Table 4

Number of pulses of the signal V3 ? 8 or 82 1 2 3 4th 5 6th 4th 8th ... Pulse number of the signal V4 80 or 84 1 2 1 Ignition cylinder no. 1 3 4th 2 1 VYY f 2 Suction cylinder no. 4th 2 1 VYY 4th 2 3 ... Mixture rich or lean f m f m f m + m • · · Polarity of
Electrodes ... + + + + + +

According to the arrangement according to Table 4, electrodes 78 or 82 and 80 or 84 are always negative or positive loaded, so that cylinders 1 and 4 are always rich and cylinders 2 and 3 are always lean Mixture are fed. The control device.68 is therefore not necessary for this mode of operation. Likewise is however, it is also possible to alternately apply a positive and a negative voltage to the electrodes 78, 82 and 80, 84 place so that each cylinder, as above

709843/0740

explained on the basis of table 2, alternating with lean and a richer mixture.

In the embodiment according to FIG. 5, the is attached to the electrodes 60 to 66 applied voltage is controlled with regard to its polarity by the control device 68, while at the nozzle 14 designed as an electrode there is always a positive voltage. This arrangement however, it can also be modified in such a way that the voltage applied to the nozzle 14 is periodically reversed in polarity while the polarity of the voltage applied to electrodes 60 to 66 does not change. In this In this case, the voltage applied to the accelerating electrode 16 is preferably opposite to that Periodically reversed polarity lying on the nozzle 14.

In the embodiments according to FIGS. 5, 6a and 6b, it is therefore possible to control the supply of the lean and the richer mixture accordingly by reversing the voltage at the electrodes 60 up to and / or at the nozzle 14. If, on the other hand, no voltage is applied to the electrodes 60 to 66 and the nozzle 14, the internal combustion engine operates in the conventional manner. Is now applied to the electrodes 60 to 66 and / or the nozzle 14 voltage applied by the controller 68 in response to certain operating parameters of the internal combustion engine, for example the speed or the opening of the throttle valve is controlled, so are a safe operation of the machine and a Economical fuel consumption can be achieved, for example, by interrupting the voltage supply to the electrodes 60 to 66 and the nozzle 14 when accelerating and at high speeds.

In Pig. 7 is a modification of the embodiment shown in FIG in which the control device 68 is replaced by another control device 68 '.

709843/0740

This is fed with a control signal V5, which of at least one operating parameter of the internal combustion engine depends, for example, on the speed, the amount of intake air, the negative pressure in a suction line, the operating temperature or the concentration at least of a component in the exhaust gases. Depending on the control signal V5, the control device 68 'controls the applied to the electrodes 60 to 66 voltage and / or their polarity, so that the cylinders of the machine over get a mixture with the most favorable air-fuel ratio over a wide operating range. Are For example, built-in exhaust gas sensors at the outlet of the cylinder, each of which indicates the concentration of a Generate component of the exhaust gases corresponding signal and feed this to the control device 68 ', so controls this then, based on the signals supplied to it, the voltage applied to the electrodes 60 to 66 and their Polarity to achieve the most favorable air-fuel ratio in each case.

In Fig. 8, the nozzle 14 and the accelerating electrode 16 are shown in detail. The nozzle 14 has an electrically conductive part 14a and an insulating part 14b. The conductive part 14a is connected to the voltage source. The acceleration electrode 16 is partially surrounded by the insulating material 86 of the Venturi nozzle 12 and is connected to the voltage source 2. It represents a part of the Venturi nozzle 12 and is preferably arranged directly below the nozzle 14. Otherwise , however, the acceleration electrode 16 can also be embodied separately from the Venturi nozzle 12.

In FIGS. 9a to 10b, two embodiments of the electrodes 82 or 84 of the arrangement according to FIG. 6b are shown. In 9a and 9b, the electrode has the shape of a cylindrical one Sleeve 90 made of conductive material, which of a

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Insulating jacket 88 fitted into the suction line 52 is surrounded.

FIGS. 10a and 10b show another embodiment 91 of FIG Electrodes 60 to 66 or 82, 84 of the arrangements according to FIGS. 5 * 6b and 7 · The electrode here has the shape of a Grid 9 ^ made of an electrically conductive material, which is held in a snugly fitted into the suction line 52 ring 92 made of an insulating material.

In Figures 11a through 11c is a preferred embodiment an electrode assembly for charging the liquid fuel, which is common to all of the above described embodiments can be used. The illustrated electrode assembly 100 has three parts 102, 104 and 106, of which one part 102 is opposite the other two parts 104 and 106 is electrically isolated. The latter two parts 104 and 106 are made in one piece and together represent an electrode. The flowing in from the float housing (not shown) Fuel is discharged by corona discharge taking place between part 102 and the other two parts 104 and 106 charged.

12a and 12b show a modification of the electrode arrangement 100 designated by 108. This has the part in FIG. 11b corresponding parts 102 'and parts 104 and 106 corresponding parts 104 '. The modified embodiment 108 is more efficient at fueling as the electrode assembly 100.

Figs. 13a and 13b show yet another embodiment an electrode assembly for efficiently charging the liquid fuel. The electrode arrangement shown can also be used for all of the embodiments described above. It points two against each other electrically

709843/0740

isolated parts 112, 11A, which in one of the float housing to the nozzle leading line 111 are arranged. The one flowing through the line from the float housing Fuel is taken by a between the parts 112 and 114- Corona discharge charged.

The embodiment shown in Fig. 1A represents a combination of the embodiments shown in FIGS . This embodiment has a simple structure and enables reliable ignition of very lean air-fuel mixture.

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Claims (34)

Claims ^ j / Arrangement for mixture preparation and supply in an internal combustion engine, characterized by an electrostatic charging device (2), by a device (12) for generating a combustible air-fuel mixture, by a first electrode (8) connected to the electrostatic charging device for Charging a liquid fuel supplied to the device for generating the mixture with a first charge, through a number of combustion chambers (18) and by a number of second electrodes (24-, 2V or 28) arranged in the individual combustion chambers, which are attached to the electrostatic charging device connected and fed by this with a second charge for enriching the air-fuel mixture in their area. 2. Arrangement according to claim 1, characterized in that the second electrodes are the center electrodes of spark plugs (26) are. 709843 / Cmo 3. Arrangement according to claim 1, characterized in that the second electrodes each have one of the two electrodes (24-, 2V) one opposite the combustion chamber (18) are electrically insulated spark plug (26). 4. Arrangement according to claim 1, characterized in that the second electrodes (28) each are arranged in the vicinity of a spark plug (26). 5- arrangement according to claim 1, characterized in that the device for generating the Air-fuel mixture has a Venturi nozzle (12) and that a third electrode in the vicinity of the Venturi nozzle (16) is arranged, which is connected to the electrostatic charging device (2) and from this with the second charge is fed. 6. Arrangement according to claim 1, characterized in that the means for generating the Air-fuel mixture has a Venturi nozzle (12) and that a third electrode (16) is integral with the Venturi nozzle connected, but arranged electrically isolated from this, with the electrostatic charging device (2) is connected and fed by this with the second charge. 7. Arrangement according to claim 1, characterized in that the walls (19) of the combustion chambers and suction lines (20) leading to these electrically with the electrostatic charging device connected and fed by this with the first charge to prevent the atomized fuel from adhering thereto to prevent. 709843/0740 8. Arrangement according to claim 1, characterized in that the size of the second electrodes (24, 28) can be controlled as a function of at least one operating parameter of the internal combustion engine is. 9- arrangement according to claim 1, characterized in that the size of the second electrodes (24, 28) supplied second charge can be controlled as a function of the speed of the internal combustion engine. 10, arrangement according to claim "1, characterized in that the first electrode in a Venturi nozzle (12) protruding fuel nozzle (14). 11. Arrangement for mixture preparation and supply in an internal combustion engine, characterized by a device (12) for generating a combustible Air-fuel mixtures, by means of an electrostatic charging device (2) to generate first and second charges of opposite polarity, by, one with the first electrode (14) connected to the electrostatic charging device for charging a liquid fuel with the first charge and for generating charged fuel droplets in the device for generating the fuel Air mixture, through a number of combustion chambers (18), through a connection between the device for generating, which connection has a plurality of suction lines of the air-fuel mixture and the combustion chambers, and by a number of arranged in the connection second electrodes (60 to 66) connected to and removed from the electrostatic charging device are fed with the first and / or the second charge, so that the air-fuel ratio by controlling the Amount of charged fuel droplets supplied to the individual combustion chambers by electrostatic 709843/0740 Forces is controllable. 12. The arrangement according to claim 11, characterized in that the first electrode is one in the Venturi nozzle (12) protruding fuel nozzle (14). 13 · Arrangement according to claim 11, characterized in that the number of second electrodes (60th to 66th) is the same as that of the combustion chambers, and that each of the second electrodes is in a suction line is arranged to adjust the air-fuel ratio of it to effectively control the mixture flowing through. 14. Arrangement according to claim 11, characterized in that the number of second electrodes (60 to 66) is the same as that of the combustion chambers and that every other electrode is close to a diverging part the individual suction lines is arranged. 15- arrangement according to claim 11, characterized in that at least one of the second electrodes (60 to 66) always fed with the first and the remaining second electrodes always with the second charge are. 16. The arrangement according to claim 15, characterized in that the size of the second electrodes (60 to 66) supplied first and second charges as a function of at least one operating parameter of the Internal combustion engine is controllable. 17. The arrangement according to claim 11, characterized in that at least one of the second electrodes (60 to 66) depending on the ignition point of the internal combustion engine either with the first or the second charge is fed and that the remaining second 709843/0740 Electrodes to control the air-fuel ratio in which combustion chambers are fed with the respective other charge. 18. The arrangement according to claim 17, characterized in that the size of the second electrodes issued first and second charges as a function of at least one operating parameter of the internal combustion engine is controllable. 19 · Arrangement according to claim 11, characterized in that at least one of the second electrodes (60 to 66) is alternately fed with the first and the second charge depending on the ignition point of the internal combustion engine and that the remaining second electrodes with
the respective other charge are fed. 20. The arrangement according to claim 19, characterized in that the size of the second electrodes issued first and second charges as a function of at least one operating parameter of the internal combustion engine is controllable. 21. Arrangement according to claim 11, characterized in that the second electrodes (60 to 66)
have a cylindrical shape. 22. Arrangement according to claim 11, characterized in that the second electrodes are grid electrodes (9 ^) are formed. 23 · Arrangement according to claim 11, characterized in that the number of second electrodes
(78, 80; 82, 84) is smaller than that of the combustion chambers, and that the second electrodes are arranged in a branch area of the suction pipes (70 to 76). 709843/0740 24. Arrangement according to claim 11, characterized in that the suction lines in two branches and these in turn are divided into branch lines (70 to 76) leading to the individual combustion chambers, that the number of second electrodes (78, 80; 82, 84) is two and that the second electrodes in the region of Division of the suction lines are arranged in two branches. 25 · Arrangement according to claim 24, characterized in that one of the two second electrodes (78, 80; 82, 84) is always fed with the first and the other second electrode always with the second charge. 26. Arrangement according to claim 24, characterized in that one of the two second electrodes (78, 80; 82, 84) as a function of an operating parameter related to the intake process of the combustion chambers the internal combustion engine optionally with the first or the second charge and the other second electrode with the each other charge is fed. 27 · Arrangement according to claim 26, characterized in that the size of the second electrodes issued first and second charges as a function of at least one operating parameter of the internal combustion engine is controllable. 28. The arrangement according to claim 11, characterized in that in each case on the combustion chambers an exhaust gas outlet is connected that in each of the exhaust gas outlets an exhaust gas sensor for generating a signal is arranged as a function of the concentration of a component of the exhaust gases, and that the size and / or Polarity of a voltage applied to the second electrodes as a function of the output signal of the exhaust gas sensors are controllable. 709843/0740 29- arrangement according to claim 11, characterized in that g e k e η η, that the device for generating the combustible air-fuel mixture has a Venturi nozzle (12), and that the third electrode (16) arranged in the region of the Venturi nozzle with the electrostatic charging device is connected and fed by this with the second charge. 30. Arrangement according to claim 11, characterized in that the device for generating the combustible Air-fuel mixture has a Venturi nozzle (12), and that the third electrode (16) is formed integrally with the Venturi nozzle, from the remaining parts of the same but electrically isolated, connected to the electrostatic charger and from this to the second Charge is fed. 31. Arrangement according to claim 11, characterized in that opposite the first electrode (102) a fourth connected to the electrostatic charging device and fed by the latter with the second charge Electrode (104, 106) is arranged, between which and the first electrode a corona discharge can be generated. 32. Arrangement according to claim 31, characterized in that the first or the fourth electrode (102 or 104) has at least one sharp edge and the other electrode has at least one slot. 33 · Arrangement according to claim 32, characterized in that the first and fourth electrodes (102 or 104) are arranged in a fuel outlet (14) projecting into a Venturi nozzle (12). 34. Arrangement according to claim 32, characterized in that the first and fourth electrodes (112 or 114) in one of a float housing (10) 709843/0740 to a fuel outlet projecting into a venturi nozzle (12) (14-) leading passage (111) are arranged. 35- Arrangement for the mixture preparation and supply in an internal combustion engine, characterized by a device (12) for generating a combustible Air-fuel mixture, by means of an electrostatic charging device (2) to generate first and second charges of opposite polarity, through one with the first electrode connected to the electrostatic charging device and fed by it with the first charge (14) for generating charged fuel droplets in the device for generating the combustible air-fuel mixture, by a number of combustion chambers (18), by one between the means for producing the combustible Air-fuel mixture and the combustion chambers arranged, a number of suction lines having Connection device, by a number of arranged in the connection device, with the electrostatic Charging device connected and fed by this with the first and / or second charge second electrodes (60 to 66) for controlling the air-fuel ratio of the mixture by controlling the amount of each Charged droplets of fuel supplied to combustion chambers by means of electrostatic forces, and through a number of arranged in the individual combustion chambers, with the electrostatic charging device connected and fed by this with the second charge third electrodes (24-, 24 'or 28) for enriching the Air-fuel mixture in their respective area. 709843/0740